Electric receptacle for multiple radio antennae systems



ELECTRIC RECEPTACLE FOR MULTIPLE RADIO ANTENNAE SYSTEMS Filed 001;. 5, 1939 INVENTOR ERNEST V. AMY

BY HIS ATTORNEYS Patented Apr. 15, 1941 sLac'riuc ascsr'racm roa MULTIPLE aamo mums srsrsus Ernest V. Amy, New York, N. Y., assignor to Amy,

Acevea a King, Inc., New York, N. Y, a corporation of New York Application October 5, 1939, Serial No. 298,149

Clalms.

This invention relates to electric attachment plug receptacles for use in connection with radio sets. More particularly it relates to electric receptacles for use with multiple radio antennae systems wherein an impedance device must be used to avoid interference between the several sets which derive their signal strength from one antenna. Heretofore, when devices of the above type have been used, the impedance device has been separate from the receptacle or, when combined therewith, the size of the device has made it diflicult to connect the device to the feed wires in an outlet box. In some cases. the depth of the device has prohibited its use in the shallow type of outlet box.

It is an object of my invention to combine the impedance device and an attachment plug receptacle into a compact structure which may be used in the shallow type of outlet or wall box. Another object of my invention is to provide an inexpensive structure combining a receptacle and an impedance device, using mainly standard parts so as to reduce to a minimum the requirement for new tools and parts. Other objects and advantages of my invention will become apparent as it is described in connection with the accompanying drawing.

In the drawing- Fig. 1 is an exploded view of one form of my radio antenna receptacle invention;

Fig. 2 is a top plan view of another form of the invention;

Fig. 3 is an exploded view of a third form of the invention Fig. 4 is a longitudinal section view through the form of invention shown in Fig. 3.

Referring to the drawing, wherein like reference numerals are used to indicate like parts in the various forms of the invention, a cylindrical body of insulation I0 is seated within the saddle of a conventional stamped U-shaped supporting bridge I! which is adapted to be secured across the open face of any conventional outlet or wall box (not shown). The insulating body i0 is pierced in its front face as at H and II, the piercings I4 and It being adapted to accommodate the prongs of a polarized attachment plug cap not shown). Within the piercings I4 and IE but not visible in the drawing are conventional contact fingers which are engaged by the prongs of the attachment plug cap in the usual manner when the cap and the receptacle are united. A pair of wire terminals such as II are mounted on opposite sides of the insulating body it in recesses such as and have 7 portions (not shown) extending into the insulating body It connecting with, or integral with, the aforementioned contact fingers. To insulate these fingers and terminals from the supporting bridge I! a sheet of insulation 22 is commonly used. The bridge i2 and sheet of insulation 22 may be secured to the insulating body III by rivets in a conventional fashion. The construction just described comprises the conventional radio type of attachment plug receptacle.

My invention comprises providing a cylindrical sleeve 30 of insulating material to fit around the lower portion of the insulating body i0 and extending upwardly far enough to cover and shield the wire terminals of the receptacle, such, for example, as terminal I8. The sleeve 30 is slotted parallel to its axis, as at a and b to accommodate the parallel portions lie and |2b of the supporting bridge of the receptacle. The lower portion of the insulating sleeve 30 extends below the insulating body I. and affords an enclosure within which is housed a transformer 32 or other impedance device. Mounted in the walls at diametrically opposite positions, such, for example, as beneath the ends of the supporting bridge I2 as in Fig. 1, are wire terminal members 34 and ll which may be stamped from sheet metal and have portions bent at right angles to extend inwardly through the wall of the shell as at a and "a. The terminal members may be provided with screws 34b and 38b for the purpose of securing radio antennae and ground leads to the terminals. The primary leads of the transformer 32 are preferably soldered to the inturned extensions 34a and 36a of the wire terminals of the sleeve 30 and the secondary leads of the transformer are connected to the wire terminals of the insulating body Ill. When the transformer connections have been completed, the sleeve 30 may be slid up into position embracing the insulating body Ill and wax may be poured into the open end or bottom of the sleeve around the transformer 32 so as to completely cover the transformer and its connections to the wire terminals 34 and 36. The sleeve and transformer will thus be held in position by the wax adhering to the receptacle structure. If desired, however, the transformer 32 may be secured to the supporting strap I! by means additional to the wax. For this purpose a screw may be passed through the transformer core 33 to the bottom of the supporting bridge I 2.

In the form of invention show in Fig. 2, the construction is the same as in Fig. 1 except that the wire terminals 34 and 38 are placed in different positions than in Fig, 1. It is desirable that these terminals be placed adjacent the ends of the supporting bridge I2 rather than at the side of the sleeve, 90 removed from the bridge. Difliculty would be encountered in wiring the receptacle if the terminals were placed in the last-mentioned position.

The form of invention shown in Fig. 3 differs from Figs. 1 and 2 in that there is provided a cup 40 of insulating material instead of sleeve 30. The upper .end of the cup embraces the receptacle in the same manner as the insulating sleeve and is provided with slots (1 and b for the accommodation of the parts Ho and l2b of the supporting strap, as in the case of the insulating sleeve. In Figs. 3 and 4, a pair of spaced connector terminals 42 and 44, such as rivets, may be mounted in the bottom of the cup and may be connected by wires 46 and 48 to the wire terminals, such as l8 of the insulating body 10. These connector terminals 42 and 44 may have soldered thereto the leads from the secondary winding of the transformer 32. A pair of wire terminals and 52 like 34 and 36 of Fig. 1 may be mounted in the bottom of the cup 40, preferably in diametrically opposite positions, but 90 removed from the connector terminals 42 and 44. The provision of these connector terminals permits the soldering of the leads of the transformer to the connector terminals and also soldering of the primary leads to the wire terminals 50 and 52, while the cup is removed from the receptacle proper. This is a decided advantage, inasmuch as the transformer is customarily wound of extremely fine wire which is liable to break if subjected to even slight strain. Thus, the transformer may be mounted in the cup and its leads soldered and also the connecting wires 46 and 48 may be soldered to the connector terminals 42 and 44. Then the heavier wire leads 46 and 48 may be connected to the terminals of the receptacle, such, for example, as l8.

When the cup is fitted up around the lower end of the insulating body l0, any slack in the wire leads 46 and 48 may be absorbed by moving the slack into the recesses, such as 20, around the wire terminals of the receptacle.

In order that the depth of the cup 40 may be minimum and also in order to afford a definite the core of the transformer into a threaded hole in the supporting bridge l2. In the form shown in Fig. 3, wax may or may not be used to fill up the cavity between the bottom of the receptacle and the bottom of the cup 40.

It will be apparent to those skilled in the art that the sleeve 30 or cup 40 may be made of box, to their terminals on the device. It will also be seen that the invention requires few new parts and enables the use of standard parts mainly so that the expense in manufacturing the invention is minimized without sacrificing quality.

Many modifications within the scope of my invention will occur to those skilled in the art. Therefore, I do not limit the invention to the specific embodiment shown. It will be particularly obvious to those skilled in the art. that impedance devices other than a transformer may be positioned within the enclosure formed by the extending portion of the insulating sleeve or cup.

I claim:

1. A connector for a multiple radio antennae system, comprising an insulating body pierced in its front face for the reception of the prongs of an attachment plug cap, and having wire terminals oppositely mounted on the side thereof, contacts within said piercings connected with said wire terminals, a member of sheet material secured across the back face of said insulating body supporting said contacts, a member of insulating material having a portion fitting around said body covering and shielding said terminals and a portion extending beyond the back thereof, a second set of mutually insulated wire terminals mounted on said last-mentioned member, and an impedance device housed within said extending portion and connected to said first and second sets of terminals, and means covering and protecting said impedance device from rear access.

2. For a multiple radio antennae system, a wall receptacle adapted to be mounted in a standard shallow wall box, a mounting bridge extending across the open front of the box, an insulating body supported by said bridge and pierced on its front face for reception of the prongs of an attachment plug cap, contacts within said piercings, wire terminals oppositely placed on the side of said body and connected with said contacts, a housing fitting around said body and covering said terminals and extending beyond the back face of said body, a second set of mutually insulated wire terminals oppositely positioned on said housing adapted for antenna and ground wires to be connected thereto within said wall box, a transformer having one set of leads connected to said body terminals and another set connected to said housing terminals, and means covering and protecting said transformer from rear access.

3. A connector for a multiple radio antennae system, comprising an insulating body pierced in its front face for the reception of the prongs of an attachment plug cap and having wire terminals oppositely mounted on the side thereof, contacts within said piercings connected with said wire terminals, a member of sheet material secured across the back face of said insulating body supporting said contacts, a shell of insulating material having a portion fitting around said body and a portion extending beyond the back face thereof, a second set of wire terminals oppositely mounted in the side of said shell, an impedance device housed within the extending portion of said shell and connected to said first and second set of wire terminals.

4. A connector for a multiple radio antennae system, comprising an insulating body pierced in its front face for the reception of the prongs of an attachment plug cap and having wire terminals oppositely mounted on the side thereof,

contacts within said piercings connected with aasam said wire terminals, 9. clip of insulating material having a well in the bottom for the reception of a transformer coil, the side portions of said cup fitting around said body and covering said wire terminals, and a second set of wire terminals mounted on said cup, and a transformer adapted to be seated in said well and having its coils connected respectively to said first and second sets of terminalasaid cup completely enclosing and protecting said transformer.

5. For a multiple radio antennae system, a wall receptacle adapted to be mounted in a standard shallow 'wall box, a mounting bridge extending across the open front of the box, an insulating body supported by said bridge and pierced on its front face for reception of the prongs of an attachment plug cap,. contacts within said piercings, wire terminals oppositely placed on the side of said body and connected with said contacts, a cup of insulating material having its upper portion fitting around said body and covering said terminals and extending beyond the back face of said body, a second set of terminals mounted on said cup, and an impedance device connected with both said sets of terminals and housed between the bottoms of said cup and said body.

6. For a multiple radio antennae system, a wall receptacle adapted to be mounted in a standard shallow wall box, a mounting bridge extending across the open front of the box, an insulating body supported by said bridge and pierced on its front face for reception of the prongs of an attachment plug cap, contacts with in said piercings, wire terminals oppositely placed on the side of said body and connected with said contacts, a cup of insulating material having its upper portion fitting around said body and covering said terminals and extending beyond the back face of said body, a second set of terminals mounted on the bottom of said cup, and an impedance device housed between the bottoms of said body and. cup.

7. For a. multiple radio antennae system, a wall receptable adapted to be mounted in a standard shallow wall box, a mounting bridge extending across the open front of the box, an insulating body supported by said bridge and pierced on its front face for reception of the prongs of an attachment plug cap, contacts within said piercings, wire terminals oppositely placed on the side of said body and connected with said contacts, a cup of insulating material having its upper portion fitting around said body and covering said terminals and extending beyond the back face of said body, a second set of wire terminals mounted oppositely on said cup, a pair of spaced connector terminals on said cup and electrically connected to said body terminals, and an'impedance device enclosed between said cup and body and connected to said connector terminals and said wire terminals on the cup.

8. For a multiple radio antennae system, a wall receptacle adapted to be mounted in a standard shallow wall box, a mounting bridge extending across the open front of the box, an insulating body supported by said bridge and pierced on its front face for reception of the prongs of an attachment plug cap, contacts within said piercings, wire terminals oppositely placed on the side of said body and connected with said contacts, a cup having its upper portion fitting around said body and covering said terminals and extending beyond the back face of said body, a second set of mutually insulated terminals mounted on said cup, a well in the bottom of said cup, a transformer "located in said well and having a hollow core, and securing means passing through said cup well into said body to hold said cup and body together, said transformer being enclosed between said cup and body.

9. A connector for a multiple radio antennae system, comprising an insulating body pierced in its front face for the reception of the prongs of an attachment plug cap and having wire terminals oppositely mounted on the side-thereof, contacts within said piercings connected with said wire terminals, a member of sheet material secured across the back face of said insulating body supporting said contacts, a member having a portion fitting around said body covering and shielding said terminals, and a portion extendingbeyond-the back thereof, a second set of mutually insulated wire terminals mounted on said last-mentioned member, and an impedance device housed within said extending portion and connected to said first and second sets of terminals, and means covering and protecting said impedance device from rear access.

10. For a multiple radio antenna system, a wall receptacle adapted to be mounted in a standard shallow wall box, a mounting bridge extending across the open front of the box, an insulating body supported by said bridge and pierced on its front face for reception of the prongs of an attachment plug cap, contacts within said piercings, wire terminals oppositely placed in the side of said body and connected with said contacts, a cup having its upper portion fitting around said body and covering said terminals and extending beyond the back face of said body, a second set of mutually insulated terminals mounted on said cup and an impedance device connected with both said sets of terminals and housed between the bottoms of said cup and said body.

ERNEST V. AMY. 

